This is a small battery (CR2032) video tester / signal generator made specifically for testing arcade monitors in JAMMA cabinets. It is the size of a typical JAMMA fingerboard and can be easily carried around in your pocket for on the go testing. With an additional cabinet adapter (see my eBay store), a number of non JAMMA cabinet monitors can be tested as well.
The tester supports the common 15kHz standard resolution, as well as the 24kHz medium resolution and 31kHz high resolution arcade modes, with JAMMA standard negative composite sync. The tester can be operated from the control panel (Player 1 Buttons 1 and 2) and can be powered by either the cabinet's power supply or the CR2032 battery.
Here are some of the features of the JAMMA Monitor Tester:
Battery Operated – about 3 hours battery life on a good quality CR2032 (depending on the battery / pattern / type of use / monitor)
Generates the following video and sync signals:
- RGB and SYNC at 3V-pp
- Negative CSYNC – (JAMMA standard)
Generates following arcade video modes:
- 15kHz – standard arcade resolution for most monitors
- 24kHz – medium resolution arcade video mode
- 31kHZ – high resolution mode supported by newer chassis
Generates the following tests in each mode:
- Text – for raster direction / yoke polarity
- Color Grids Primary Colors – for color check and adjustment
- Color Grids Primary and Secondary Colors – for color check and adjustment
- Checkerboard – for geometry and convergence checks, white / black level / saturation
- Grid - for geometry checks
- Convergence Grid - for convergence checks
- Pong - streaking test
- Hollow / Filled Box – for bloom artifact check
- Moving Crosshairs - geometry distortion check
- Vertical Primary Color Bars – for color check and adjustment
- Vertical Secondary Color Bars – for color check and adjustment
- Vertical Tertiary Color Bars – for color check and adjustment
- Scrolling Horizontal Color Bars – bloom and color uniformity
- Solid Full Screen White – for burn in and degaussing
- Solid Full Screen Red – for burn in and degaussing
- Solid Full Screen Green – for burn in and degaussing
- Solid Full Screen Blue – for burn in and degaussing
- Alternating Color Grid - color transitions / color saturation test
- Alternating Full Screen Color – burn in, degaussing, color transitions
- Random Color Grid - stability testing, demo mode, etc...
Battery life indicator shows battery status through MODE LED.
- LED always on – full battery
- Duration of on/off cycle indicates battery depletion level
- 50% off/on blink – nearly dead
To operate the tester, connect the edge connector to your cabinet's JAMMA harness. Press the MODE button to cycle through the available video modes, and TEST to cycle through the tests. The tester can also be controlled from the cabinet control panel using PLAYER 1 BUTTON 1 (MODE) and BUTTON 2 (TEST). It is not necessary to have a working PSU to test the monitor (ON switch in the BATT position). If the cabinet does have a working PSU, the tester can be powered from the +5V rail of the JAMMA harness (ON switch on the PSU position).
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